Rebuild of an old cruiser

[Sachmle]

Would it be worth it to do this?
Here is original sim: http://www.navalism.org/index.php?topic=1224.msg11095#msg11095

Understand it to say that the center shaft is a cruiser VTE and the outboard shafts are turbines, so removed the center shaft and VTE completely. Install new 1916 turbines on outer shafts. Remove coal boilers and replace with oil burners. New engines up speed to 28kts, new boilers increase range to 7000nm @ 12 kts. Removed deck armor (old style) and replaced w/ new KC deck. Did same w/ CT armor. Removed armor from guns and replaced w/ new KC. Added an armour belt and end belt. Added FC. Removed single 45cm torpedo tube. Installed 2 twin 50cm tubes. Installed long range W/T and Sehendes Auge (~Radar). Used room previously for coal bunkers to increase magazine space. Retrimmed after reconstruction. I have limited grasp of how to calculate cost, but here is the new SS:

SMS Athena (ex- Russian Diana), Brandenburg (ex-Russian) Panzerkreuzer laid down 1895 (Engine 1916)

Displacement:
   6,226 t light; 6,508 t standard; 7,072 t normal; 7,523 t full load

Dimensions: Length overall / water x beam x draught
   405.84 ft / 405.84 ft x 55.12 ft x 21.00 ft (normal load)
   123.70 m / 123.70 m x 16.80 m  x 6.40 m

Armament:
      4 - 5.12" / 130 mm guns in single mounts, 67.03lbs / 30.41kg shells, 1909 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, evenly spread
      8 - 5.12" / 130 mm guns in single mounts, 67.02lbs / 30.40kg shells, 1895 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      6 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1895 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 882 lbs / 400 kg
   Shells per gun, main battery: 250
   4 - 19.7" / 500 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.95" / 75 mm   278.87 ft / 85.00 m   16.01 ft / 4.88 m
   Ends:   0.98" / 25 mm   126.94 ft / 38.69 m   12.01 ft / 3.66 m
     Main Belt covers 106 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.95" / 75 mm   1.97" / 50 mm      2.95" / 75 mm
   2nd:   2.95" / 75 mm   1.97" / 50 mm      2.95" / 75 mm
   3rd:   0.98" / 25 mm         -               -

   - Armour deck: 2.95" / 75 mm, Conning tower: 5.91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 49,684 shp / 37,064 Kw = 28.00 kts
   Range 7,000nm at 12.00 kts
   Bunker at max displacement = 1,015 tons

Complement:
   385 - 501

Cost:
   £0.570 million / $2.279 million

Distribution of weights at normal displacement:
   Armament: 110 tons, 1.6 %
   Armour: 1,625 tons, 23.0 %
      - Belts: 615 tons, 8.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 129 tons, 1.8 %
      - Armour Deck: 835 tons, 11.8 %
      - Conning Tower: 47 tons, 0.7 %
   Machinery: 1,851 tons, 26.2 %
   Hull, fittings & equipment: 2,440 tons, 34.5 %
   Fuel, ammunition & stores: 846 tons, 12.0 %
   Miscellaneous weights: 200 tons, 2.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,206 lbs / 3,722 Kg = 122.4 x 5.1 " / 130 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 2.5 ft / 0.7 m
   Roll period: 14.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 68 %
         - Recoil effect (Restricted arc if above 1.00): 0.36
   Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.527
   Length to Beam Ratio: 7.36 : 1
   'Natural speed' for length: 20.15 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      20.67 ft / 6.30 m
      - Forecastle (20 %):   20.67 ft / 6.30 m
      - Mid (50 %):      20.67 ft / 6.30 m
      - Quarterdeck (15 %):   20.67 ft / 6.30 m
      - Stern:      20.67 ft / 6.30 m
      - Average freeboard:   20.67 ft / 6.30 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101.4 %
      - Above water (accommodation/working, high = better): 139.3 %
   Waterplane Area: 15,279 Square feet or 1,419 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 90 lbs/sq ft or 442 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 3.04
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

100t FC
25t Long range W/T
25t Sehendes Auge
4t Torpedeos
46t Weight reserve

[Jefgte]

IMO, the ship is too old.
Interresting to rebuilt a 10 yo ship but not a 21 yo.


Jef  ;)

[The Bushranger]

I'd have to say not really - Athena/Diana was already more or less rebuilt once, when she was acquired.

What I would suggest would be to make use of that significant weight/strength reserve she has, and refit her as a training ship.